Foot cushion



FIG. 1 is a perspective view showing my new design for a foot cushion;

FIG. 2 is a back view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof,

FIG. 5 is a left side view thereof,

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing of a rectangle in FIG. 7 is included for the purpose of illustrating only and forms no part of the claimed design. 

The ornamental design of a foot cushion, as shown and described. 